Last Retort

Hanging on to helium

21 August 2014 Last Retort

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Coping with our dwindling supplies of a gas that disappears into space


Flashback

10 years ago: open access

21 August 2014 Flashback

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The start of a shift to new publishing models

Puzzles

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Download the September set of puzzles

The winners of this month's puzzles will be published next month. For a chance to win a £25 book voucher please send your completed puzzles by 15 September.

Chemistry World Puzzle Answers
Royal Society of Chemistry
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E-mail: chemistryworld@rsc.org